5 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Helium 4"  
Results: 1 - 5
open access

Saturating interactions in /sup 4/He with density dependence

Description: With the advent of larger and faster computers, as well as modern shell model codes, nuclear structure calculations for the light nuclei (A<16) which include full 2/bar h/..omega.. model spaces are quite feasible. However, there can be serious problems in the mixing of 2/bar h/..omega.. and higher excitations into the low-lying spectra if the effective interaction is non-saturating. Furthermore, effective interactions which are both saturating and density dependent have not generally been used … more
Date: May 3, 1989
Creator: Bloom, S.D.; Resler, D.A. & Moszkowski, S.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final state effects in quantum fluids

Description: The extraction of momentum distributions from high energy scattering experiment depends on the validity of the impulse approximation (IA) which has been extensively discussed in the workshop overview. The IA assumes that in the scattering process the kinetic energy imparted to a recoiling particle is large compared to the potential energy due to neighboring particles. While this may be true for x-ray Compton scattering from electronic systems, it is less true for quasielastic electron-nucleus s… more
Date: January 1, 1989
Creator: Silver, R.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Bose condensate in superfluid sup 4 He and momentum distributions by deep inelastic scattering

Description: There are several reasons for the high interest in the recent experimental and theoretical progress in understanding deep inelastic neutron scattering from liquid {sup 4}He: it tests the fundamental London hypothesis of a connection between superfluidity and Bose condensation; it provides a quantitative test of ab-initio calculational methods for all systems with strong correlations which are the focus of current quantum many-body research; and it establishes the range of validity of deep inela… more
Date: January 1, 1989
Creator: Silver, R. N. (Los Alamos National Lab., NM (USA)) & Sokol, P. E. (Pennsylvania State Univ., University Park, PA (USA). Dept. of Physics)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cold fusion, Alchemist&#x27;s dream

Description: In this report the following topics relating to cold fusion are discussed: muon catalysed cold fusion; piezonuclear fusion; sundry explanations pertaining to cold fusion; cosmic ray muon catalysed cold fusion; vibrational mechanisms in excited states of D{sub 2} molecules; barrier penetration probabilities within the hydrogenated metal lattice/piezonuclear fusion; branching ratios of D{sub 2} fusion at low energies; fusion of deuterons into {sup 4}He; secondary D+T fusion within the hydrogenate… more
Date: September 1, 1989
Creator: Clayton, E. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final state effects in liquid /sup 4/He: An experimental test

Description: Inelastic neutron scattering at high momentum transfers can provide direct information on the atomic momentum distribution n(p) when the Impulse Approximation (IA) is valid. In isotropic systems, the scattering in the IA is directly proportional to the longitudinal momentum distribution which is a function of a single scaling variable Y /triple bond/ (M/Q)(..omega.. /minus/ ..omega../sub r/), where M is the mass of the scatterer, Q is the momentum transfer, and ..omega../sub r/ = Q/sup 2//2M is… more
Date: January 1, 1989
Creator: Sokol, P. E.; Silver, R. N.; Sosnick, T. R. & Snow, W. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen